Whirling maple seeds inspired these tiny flying sensors
Objects as small as a sand grain could be dispersed by air to monitor environmental conditions
![rows of microfliers](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/09/092121_ec_microfliers_feat.jpg?fit=1030%2C580&ssl=1)
Scientists created minuscule “microfliers” in a variety of shapes (shown) that glide through the air similar to maple tree seeds.
Northwestern University